<table class="MRH-njmSb5ZTkfb1o4dqv"><thead><tr class="s6JZe6869f81l9E_5G7Q9"><th class="_3TNkDptlyGOiWXvdX_acOB">syntax</th><th class="_3TNkDptlyGOiWXvdX_acOB">visible in terminal (StdOut)</th><th class="_3TNkDptlyGOiWXvdX_acOB">visible in terminal (StdErr)</th><th class="_3TNkDptlyGOiWXvdX_acOB">visible in file (StdOut)</th><th class="_3TNkDptlyGOiWXvdX_acOB">visible in file (StdErr)</th><th class="_3TNkDptlyGOiWXvdX_acOB">existing file</th><th class="_3TNkDptlyGOiWXvdX_acOB">non-posix</th></tr></thead><tbody><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">></td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">overwrite</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">>></td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">append</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2></td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">overwrite</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2>></td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">append</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2>1</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DqGFKR55y45L5IxBTgsFz">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">overwrite</td><td class="_3DYfYn_cczg1wj_a3hhyV6">&></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2>>1</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DqGFKR55y45L5IxBTgsFz">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">append</td><td class="_3DYfYn_cczg1wj_a3hhyV6">&>></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">| tee</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">overwrite</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">| tee -a</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">append</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2>&1 1>/dev/null | tee</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">overwrite</td><td class="_3DYfYn_cczg1wj_a3hhyV6">2> >(tee filename >&2)</td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2>&1 1>/dev/null | tee -a</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">append</td><td class="_3DYfYn_cczg1wj_a3hhyV6">2> >(tee -a filename >&2)</td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">|& tee</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">overwrite</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">|& tee -a</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">append</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2> /dev/null | tee</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">overwrite</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr><tr class="s6JZe6869f81l9E_5G7Q9"><td class="_1LHijgw3WoeCUe8AUewfUB">2> /dev/null | tee -a</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DqGFKR55y45L5IxBTgsFz">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">yes</td><td class="_3DYfYn_cczg1wj_a3hhyV6">no</td><td class="_3DYfYn_cczg1wj_a3hhyV6">append</td><td class="_3DYfYn_cczg1wj_a3hhyV6"></td></tr></tbody></table>
Source